1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d0dd68768823035828ba9ff0445f1378c8a2a876de5896ba6f17249456fbdc. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/defe44a6-0132-4ad0-934a-e331791deadd.json and https://artists.proofprofile.net/proofs/artist/defe44a6-0132-4ad0-934a-e331791deadd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4aabb06362f50575d87f8e16c989df9aca66980c17861c04d8a36d2cc3b9e0e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB2LD2110247.
The Sound of Drum & Bass 2018 (Viper Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0e2b3dd3ed42a6c8f66309522d44b66267dc7ec2c5888683b4a9765c819fe8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1800810.
Drum & Bass Annual 2018 (Viper Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13cf83b4600e2ae2541dffc037d4441cc2a31868c9846dcda0f78072cd2074e. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1800726.
Drum & Bass Summer Slammers 2016 (Viper Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a95920d803b2e2d7e9c15b9bc893f628413c6cb9ff377ef5f4ab107e7717ed4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU1673420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8f5babf074663f7a36227a6e3463d1f5952038eafd2ea33bf41f5a386a4f2c. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:35:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1600480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726e495309b1d7fc2959b0e4019dba4bffce35d248047471345877af54ceee48. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1600482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cf077b69c0954463b21cc51e5168319f1127e657e5c1e48578f9fe8c0541eb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCJY2200217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c996d78bc58052f8c4b0b2258026a7119a56ff5d394e91e911a2213651bbe6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ2101075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8374f2d94da4bab60c880087d77f6a914f32f6e145cdfbb4b521073b52dc67. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ2001027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ace78cff93ec3d1c2dbc9c17eee04b37747968ce31854311600cc93f3f8b6e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1900925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7284724ea44aec95cc419a8c3b85a517b930d88f69fe9934c9d3db58c447babd. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:52:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1700651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd673ea07c507ee49e1679be94dd7d44952d9244ad18a17b69fa9662395815ed. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1800755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5451dbc6a644b6a43cd2325354f92c1b527220364cc891c03fabf39576faa208. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1700700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cb285a426723d3a82c859d79a17713b87537d741f5c54637d92a9aedc43d64. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1800758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a9600de7edb0afd4974af04ac5dff5a8f2d32544745b5aded35f0a01405663. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1500379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1916ad0c25537c22b57d21110e974a967dc0f376bf1dacb87d2172f7d949f792. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1700544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d70ca41d16baa6508af04f99c95cf370a5a5a05423dad4344c17f239b44317e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1800759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9576b5ec5aa3edfde8d3b7d2aacd4971eca133169a8e2871c7cb7e2868fb4315. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1700719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766cdf5ae2362aa883cd0298a3d724dd2858aa371be8fdd1cbed1815a51de0f7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1520909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a95920d803b2e2d7e9c15b9bc893f628413c6cb9ff377ef5f4ab107e7717ed4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU1673420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813acc09c4e2f0b55725a36aa63dd10d1b0c11166f00fdba6d7f68dd3cf78bdd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB2ME1200764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560c07f0dde08a91592f9c4698028e2ae6de835008583f96410ff8ea49086424. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1800753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06848b3b347d95564ac5ebda284fa4d2332d40599bd058e0221b4bf5ad73b5af. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1800833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e3f4ae727de5c525649b42ac3ac5db2bc5a90e55c3eefe6c7d26b3c570174d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1600521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72134e48a351e8c72e1aa7e4c9d043af7b60d3af342362d5b1d3b8225b6e7e08. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1800834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49063dac96995da2f07be3bb0500e2ea413016c43633fdf3f6b3c891b005252c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1800815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8e61c7226560b5a507a5700ea1286f94b43b9c7f90a763167c29d860ce2ccd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1700704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a8dc8fba7972283859ca5fe2426d85d6c75ac866a65ff9245591090d5d1ffd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1700547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd496f2e5e4a8643321d8f435a5252472b56730cb76ea863cc273b4a87acd95cb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1500381.
Decade of Viper (10 Years of Viper Recordings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7caf44fd7a0ff0788fe0b471def1b5bea696aec72797b98b8e981fabb2360cb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1400313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87237a87f99b2e7296854047a26dc15b5f629cbda1e0f99376e47bed84d5109e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1400314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef85e39d7a2de3abe1afde2b7f340efb799e68f3b5f4afa78d4bd791dc176a6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA6D22100394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0901c70c619f09bd173a417b434074b904ebd556a4fbb83f1bd3c80dc9eb6e2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA6D22100393.
Viper Presents: Drum & Bass Summer Slammers 2015
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7caf44fd7a0ff0788fe0b471def1b5bea696aec72797b98b8e981fabb2360cb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1400313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a31625e13fc8ecc9146267079bc64d19d8073a2b070b8562080b67669b96f0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB6TC1735004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75025f2c5bdc779d18ee9802a744273ef0b91209be3ffd29a7dcc47d56441fd. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:28:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB6TC1735007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a019c94a23971a55da4a27e4b741a6d5b149f09f0c71092c7b670762d0b4fab. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTMZ1700705.
Drum & Bass Summer Slammers 2014 (Viper Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8d266ead7339bc953df6be5d500daf1f711b488a75e70b53cce0946c6d7c93. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR4GL1110247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6fd77d20e3aa8201303417b81719bf8e0b08f924092f734aee239a4cbb0fac. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBZH1300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9b1cd65aa99af50dc744992fe0537688800acb1933ccaa54df24005bc4c8a8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB6TC1950014.